In cryptography, you try to hide the message from listeners (except your friends). In anticryptography, you try to write a message that a diligent and motivated listener can decode despite his having none of your biological, pyschological and social reference points.
I certainly don’t know how you are going to do it at the blackboard. Anything you write on the blackboard comes from you, not something outside space-time.
I meant that most of the difficulty of the project is in understanding our laws of physics well enough to invent a possible novel method for sending and receiving messages.
I don’t see how you can have this other observer and at the same time have the scientist with control over the lab.
It is possible for the fundamental laws of physics as we know them to continue to apply without exception and for physicists to discover a novel method of sending or receiving messages because the fundamental laws are not completely deterministic. Specifically, when a measurement is performed on a quantum system, the result of the measurement is “random”. If as E.T.Jaynes taught saying that something is random is a statement about our ignorance rather than a statement about reality then it is not a violation of the fundamental laws to discover that the data we used to consider random in actuality has a signal or a message in it.
In cryptography, you try to hide the message from listeners (except your friends). In anticryptography, you try to write a message that a diligent and motivated listener can decode despite his having none of your biological, pyschological and social reference points.
I certainly don’t know how you are going to do it at the blackboard. Anything you write on the blackboard comes from you, not something outside space-time.
I meant that most of the difficulty of the project is in understanding our laws of physics well enough to invent a possible novel method for sending and receiving messages.
I don’t see how you can have this other observer and at the same time have the scientist with control over the lab.
It is possible for the fundamental laws of physics as we know them to continue to apply without exception and for physicists to discover a novel method of sending or receiving messages because the fundamental laws are not completely deterministic. Specifically, when a measurement is performed on a quantum system, the result of the measurement is “random”. If as E.T.Jaynes taught saying that something is random is a statement about our ignorance rather than a statement about reality then it is not a violation of the fundamental laws to discover that the data we used to consider random in actuality has a signal or a message in it.